按规定：过氧乙酸溶液应稀释到0.2%—0.5%才能用于消毒,现有含过氧乙酸液20%的溶液0.8千克,至少加水多少
题目
按规定：过氧乙酸溶液应稀释到0.2%—0.5%才能用于消毒,现有含过氧乙酸液20%的溶液0.8千克,至少加水多少
答案
20%×0.8÷0.5%-0.8
=32-0.8
=31.2千克
举一反三
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